What is a volcano:- Openings in the surface of the earth which magma and gases can escape Pressure in the mantle forces magma to the surface. Occurs where magma finds a way through a crack or weakness in the earth's crust.This is usually at the earth's crust
OUTLINE:-
There are about 600 volcanoes on land
many more lie beneath the sea
one major volcano belt is ring of fire
most volcanoes occur along diverging plate boundaries ,such as the mid -ocean ridge or in subduction zones around the edges of oceans
Volcanoes and plate tectonics
vocabulary
What is a volcano:- Openings in the surface of the earth which magma and gases can escape Pressure in the mantle forces magma to the surface. Occurs where magma finds a way through a crack or weakness in the earth's crust.This is usually at the earth's crust
OUTLINE:-